15-13b=18

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Solution for 15-13b=18 equation: 



15-13b=18

We move all terms to the left:

15-13b-(18)=0

We add all the numbers together, and all the variables

-13b-3=0

We move all terms containing b to the left, all other terms to the right

-13b=3

b=3/-13

b=-3/13

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